Yeah, it is definitely worth it. Mine has been a bear to tune but almost done. Blowzilla with 10# pulley, makes 8# on my 306, Edelbrock 60379 heads, Explorer lower, Crane 2030 cam, 42# injectors, 70mm TB, stock inlet and air box w/ K&N panel filter, stock FPR and 190 L/hr pump, stock block...